[orx-mesh, orx-mesh-noise] Add orx-mesh-noise

orx-mesh/src/commonMain/kotlin/CompoundMeshData.kt

@@ -1,4 +1,4 @@
-package org.openrndr.extra.objloader
+package org.openrndr.extra.mesh
 
 /**
  * Compound mesh data interface
@@ -8,6 +8,8 @@ interface ICompoundMeshData {
     val compounds: Map<String, IMeshData>
 
     fun triangulate(): ICompoundMeshData
+
+    fun toMeshData(): IMeshData
 }
 
 class CompoundMeshData(
@@ -15,15 +17,15 @@ class CompoundMeshData(
     override val compounds: Map<String, MeshData>
 ) : ICompoundMeshData {
 
-    init {
-        
-    }
-
     override fun triangulate(): CompoundMeshData {
         return CompoundMeshData(vertexData, compounds.mapValues {
             it.value.triangulate()
         })
     }
+
+    override fun toMeshData(): MeshData {
+        return MeshData(vertexData, compounds.values.flatMap { it.polygons })
+    }
 }
 
 class MutableCompoundMeshData(
@@ -36,6 +38,11 @@ class MutableCompoundMeshData(
             vertexData,
             compounds.mapValues {
                 it.value.triangulate()
-            }.toMutableMap())
+            }.toMutableMap()
+        )
+    }
+
+    override fun toMeshData(): IMeshData {
+        return MutableMeshData(vertexData, compounds.values.flatMap { it.polygons }.toMutableList())
     }
 }

orx-mesh/src/commonMain/kotlin/CompoundMeshDataExtensions.kt

@@ -1,4 +1,4 @@
-package org.openrndr.extra.objloader
+package org.openrndr.extra.mesh
 
 import org.openrndr.draw.VertexBuffer
 import org.openrndr.draw.vertexBuffer

orx-mesh/src/commonMain/kotlin/IndexedPolygon.kt

@@ -1,4 +1,4 @@
-package org.openrndr.extra.objloader
+package org.openrndr.extra.mesh
 
 import org.openrndr.math.Matrix44
 import org.openrndr.math.Vector2

orx-mesh/src/commonMain/kotlin/MeshData.kt

@@ -1,4 +1,4 @@
-package org.openrndr.extra.objloader
+package org.openrndr.extra.mesh
 
 import kotlin.jvm.JvmRecord
 
@@ -21,7 +21,10 @@ data class MeshData(
     override val polygons: List<IndexedPolygon>,
 ) : IMeshData {
     override fun triangulate(): MeshData {
-        return copy(polygons = polygons.flatMap { polygon -> polygon.triangulate(vertexData) })
+        return if (isTriangular()) {
+            this
+        } else
+            copy(polygons = polygons.flatMap { polygon -> polygon.triangulate(vertexData) })
     }
 
     override fun toPolygons(): List<Polygon> {
@@ -40,7 +43,11 @@ data class MutableMeshData(
     override val polygons: MutableList<IndexedPolygon>
 ) : IMeshData {
     override fun triangulate(): MutableMeshData {
-        return copy(polygons = polygons.flatMap { it.triangulate(vertexData) }.toMutableList())
+        return if (isTriangular()) {
+            this
+        } else {
+            copy(polygons = polygons.flatMap { it.triangulate(vertexData) }.toMutableList())
+        }
     }
 
     override fun toPolygons(): List<Polygon> {

orx-mesh/src/commonMain/kotlin/MeshDataExtensions.kt

@@ -1,4 +1,4 @@
-package org.openrndr.extra.objloader
+package org.openrndr.extra.mesh
 
 import org.openrndr.color.ColorRGBa
 import org.openrndr.draw.VertexBuffer
@@ -18,7 +18,14 @@ internal val objVertexFormat = vertexFormat {
 }
 
 /**
- * Converts a [MeshData] instance into a [VertexBuffer]
+ * Determine if [IMeshData] is triangular by checking if each polygon has exactly 3 vertices
+ */
+fun IMeshData.isTriangular(): Boolean {
+    return polygons.all { it.positions.size == 3 }
+}
+
+/**
+ * Convert a [MeshData] instance into a [VertexBuffer]
  */
 fun IMeshData.toVertexBuffer(elementOffset: Int = 0, vertexBuffer: VertexBuffer? = null): VertexBuffer {
     val objects = triangulate().toPolygons()

orx-mesh/src/commonMain/kotlin/Polygon.kt

@@ -1,4 +1,4 @@
-package org.openrndr.extra.objloader
+package org.openrndr.extra.mesh
 
 import org.openrndr.color.ColorRGBa
 import org.openrndr.math.Matrix44

orx-mesh/src/commonMain/kotlin/VertexData.kt

@@ -1,4 +1,4 @@
-package org.openrndr.extra.objloader
+package org.openrndr.extra.mesh
 
 import org.openrndr.color.ColorRGBa
 import org.openrndr.math.Vector2

orx-mesh/src/commonMain/kotlin/Wireframe.kt

@@ -1,4 +1,4 @@
-package org.openrndr.extra.objloader
+package org.openrndr.extra.mesh
 
 import org.openrndr.math.Vector3
 

orx-mesh/src/jvmMain/kotlin/VertexBufferExtensions.kt

@@ -1,7 +1,9 @@
+package org.openrndr.extra.mesh
+
 import org.openrndr.color.ColorRGBa
 import org.openrndr.draw.VertexBuffer
-import org.openrndr.extra.objloader.Polygon
-import org.openrndr.extra.objloader.objVertexFormat
+import org.openrndr.extra.mesh.Polygon
+import org.openrndr.extra.mesh.objVertexFormat
 import org.openrndr.math.Vector2
 import org.openrndr.math.Vector3
 import java.nio.ByteBuffer